OFFSET
2,1
COMMENTS
Equals 4*A212003/Product(Gamma(i/4), i=1..4). - Bruno Berselli, Jan 17 2013
LINKS
Soon-Yi Kang and Chang Heon Kim, Arithmetic Properties of Traces of Singular Moduli on Congruence Subgroups, arXiv:0904.3777v1, Apr 24 2009, p. 5 (Example 1).
EXAMPLE
56.1985178483258111452509971456391583957320734965376193599177682...
MATHEMATICA
RealDigits[8*Pi*5^(1/2), 10, 87][[1]] (* Bruno Berselli, Feb 04 2012 *)
PROG
(PARI) 8*Pi*sqrt(5) \\ Charles R Greathouse IV, Oct 01 2022
CROSSREFS
KEYWORD
nonn,cons
AUTHOR
Omar E. Pol, Feb 01 2012
EXTENSIONS
More terms from Bruno Berselli, Feb 04 2012
STATUS
approved